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The impacts of dimethylation of 4-Amino-1,8-Naphthalimide (ANI) on its photophysical properties are reported. The resulting 4-DiMe-ANI displays completely different fluorescence properties, conferring it ability to selectively label lipid droplets in living cells. A comprehensive photophysical study revealed that this selectivity arises from an Internal Charge Transfer favored in lipophilic media to the detriment of a non-emissive TICT in more polar media. This results in a very high "LDs/Cytosol" signal ratio, enabling LDs to be imaged with an excellent signal-to-noise ratio, and positioning its performance above that of the BODIPY 493/503 commonly used to image LDs.
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http://dx.doi.org/10.1002/cbic.202400270 | DOI Listing |
Regen Med
September 2025
Symbiosis Centre for Stem Cell Research (SCSCR), Symbiosis School of Biological Sciences (SSBS), Symbiosis International, Deemed University, Lavale, Pune, India.
Aims: This study aimed to enhance the osteoinductive potential of mesenchymal stem cell-derived extracellular vesicles (MSC-EVs) by integrating them into a nano-hydroxyapatite (nHAp)-enriched hydrogel scaffold for bone regeneration applications.
Materials & Methods: EVs were isolated from naïve and osteogenically primed MSCs and characterized for morphology, cargo content, and cytocompatibility. Their uptake and osteoinductive activity were assessed using MC3T3 cells within a 3D interpenetrating network (IPN) hydrogel.
Rev Esc Enferm USP
September 2025
Universidade Estadual Paulista, Faculdade de Medicina, Botucatu, SP, Brazil.
Objective: To evaluate the effectiveness of intravenous laser irradiation of blood in reducing viral load and increasing LT-CD4+ and LT-CD8+ in people living with HIV/AIDS.
Method: Randomized, controlled, parallel, single-blind clinical trial. Twenty-eight participants were allocated to the intervention (ILIB n = 15) and control (CTRL n = 13) groups.
Biomacromolecules
September 2025
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
Triple-negative breast cancer (TNBC) remains a formidable clinical challenge due to its aggressive behavior, lack of therapeutic targets, and poor prognosis. The PI3K/AKT/mTOR pathway is highly activated in TNBC, making it a promising therapeutic target. Conventional PEGylated nanocarriers often face challenges, such as accelerated blood clearance and lysosomal trapping.
View Article and Find Full Text PDFLangmuir
September 2025
Microplastics Research Center, Yaroslav-the-Wise Novgorod State University, Veliky Novgorod 173003, Russia.
Microplastics, tiny fragments resulting from the degradation of plastic waste, are abundant in water, air, and soil and are currently recognized as a global environmental problem. There is also growing evidence that nanosized microplastics (nanoplastics) can be hazardous to living species. Unlike most experimental methods, computer modeling is particularly well suited to studying the effects of such nanoplastics.
View Article and Find Full Text PDFmBio
September 2025
Centre de Recherche du CHUM, Montreal, Québec, Canada.
HIV-1-mediated CD4 downregulation is a well-known mechanism that protects infected cells from antibody-dependent cellular cytotoxicity (ADCC). While CD4 downregulation by HIV-1 Nef and Vpu proteins has been extensively studied, the contribution of the HIV-1 envelope glycoprotein (Env) in this mechanism is less understood. While Env is known to retain CD4 in the endoplasmic reticulum (ER) through its CD4-binding site (CD4bs), little is known about the mechanisms underlying this process.
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